| Patents for F04D 31 - Pumping liquids and elastic fluids at the same time (579) |
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| 03/02/2005 | CN1191430C Mixed flow Liquid ring pumps |
| 02/23/2005 | EP1507957A1 Coolable component and method for the production of a through opening in a coolable component |
| 02/10/2005 | US20050029165 Use of a two-phase turbine in a hydrotreatment process |
| 02/09/2005 | EP1505250A1 Use of a two-phase turbine in a hydrotreating process |
| 02/01/2005 | CA2310062C Stage in a submerged multiple-stage pump |
| 01/06/2005 | US20050000892 Sludge extractor |
| 12/22/2004 | CN1181266C Axial-flow self-balancing air oil mixed transfer pump and control system thereof |
| 12/22/2004 | CN1181265C Axial-flow air oil mixed transfer pump and control system thereof |
| 11/24/2004 | EP1479919A2 Convertible transfer pump |
| 09/30/2004 | WO2004083601A1 A system and process for pumping multiphase fluids |
| 09/16/2004 | DE20319723U1 Tornado simulator generator uses fan to produce vacuum and rotation of air column and with optional mist generator to show up air whirl |
| 08/31/2004 | US6783331 System and method of multiple-phase pumping |
| 08/11/2004 | CN1161179C Self-sucking gas-liquid mixing pump and gas-liquid mixing method |
| 08/10/2004 | US6773235 Rotodynamic multi-phase flow booster pump |
| 07/28/2004 | EP1440221A1 Combination well kick off and gas lift booster unit |
| 06/23/2004 | EP1430223A2 Sludge extractor |
| 06/17/2004 | US20040115078 Water pump motor |
| 06/08/2004 | US6746219 Water pump motor |
| 06/08/2004 | CA2086298C Process and device for optimizing the transfer through pumping of multiphase effluents |
| 06/08/2004 | CA2086297C Process for optimizing the control and the modulation of a multiphase flow and device thus obtained |
| 05/20/2004 | US20040096320 Multistage submersible axial-flow pump |
| 05/06/2004 | WO2004010003A3 Method for compressing the working fluid during a water/steam combination process |
| 04/27/2004 | CA2117343C Multiphase fluid treatment |
| 04/07/2004 | EP1135611B1 Improvements relating to froth pumps |
| 03/31/2004 | EP1033493A4 Stage in a submerged multiple-stage pump |
| 03/18/2004 | WO2004011811A9 Mix-in structure for gas or the like in pressurization centrifugal pump |
| 03/11/2004 | US20040047728 Impeller for gassy well fluid |
| 02/25/2004 | EP1102936B1 Rotation device |
| 02/24/2004 | CA2391110C Multiphase fluid treatment |
| 02/12/2004 | DE10331978A1 Process for compressing the working fluid during a water-steam combination process in multi-stage turbocompressors comprises intercooling in the individual compressor stages by the addition of a coolant to the working fluid |
| 02/11/2004 | EP1121534B1 Pulp pump |
| 02/05/2004 | WO2004011811A1 Mix-in structure for gas or the like in pressurization centrifugal pump |
| 02/05/2004 | CA2493419A1 Mix-in structure for gas or the like in pressurization centrifugal pump |
| 02/04/2004 | EP0993555B1 Apparatus for conditioning air |
| 01/29/2004 | WO2004010003A2 Method for compressing the working fluid during a water/steam combination process |
| 01/29/2004 | CA2497581A1 Method for compressing the working fluid during a water/steam combination process |
| 01/13/2004 | US6676366 Submersible pump impeller design for lifting gaseous fluid |
| 12/17/2003 | CN2592928Y Liquid-ring vacuum regulating system |
| 11/27/2003 | WO2003098008A1 Coolable component and method for the production of a through opening in a coolable component |
| 10/08/2003 | CN1123700C Centrifugal froth pumps and impeller switable for same |
| 10/01/2003 | EP1348065A1 Method, computer program prodcut and use of a computer program for stabilizing a multiphase flow |
| 09/30/2003 | US6627174 Stable transport of liquid/gas dispersions |
| 09/18/2003 | WO2003076811A1 Submersible pump impeller design for lifting gaseous fluid |
| 09/16/2003 | US6619910 Froth pumps |
| 09/11/2003 | US20030170112 Submersible pump impeller design for lifting gaseous fluid |
| 09/03/2003 | CN1439812A Axial-flow self-balancing air oil mixed transfer pump and control system thereof |
| 09/03/2003 | CN1439811A Axial-flow air oil mixed transfer pump and control system thereof |
| 08/14/2003 | WO2003031814A3 Sludge extractor |
| 08/13/2003 | EP1200738B1 A pumping arrangement for pumping a liquid product from a tank or container |
| 05/20/2003 | US6565315 Rotation device |
| 05/08/2003 | US20030085036 Combination well kick off and gas lift booster unit |
| 04/24/2003 | WO2003033865A1 Combination well kick off and gas lift booster unit |
| 04/23/2003 | CN1106505C Axial conveyor and loop reactor containing said axial conveyor |
| 04/17/2003 | WO2003031814A2 Sludge extractor |
| 04/15/2003 | US6547514 Technique for producing a high gas-to-liquid ratio fluid |
| 03/13/2003 | US20030049138 System and method of multiple-phase pumping |
| 03/06/2003 | WO2003019015A1 System and method of multiple-phase pumping |
| 01/22/2003 | CN1392346A Multiple phase fluid pumping or compressing device with serial vanes |
| 01/16/2003 | US20030010502 Method and system for optimizing the performance of a rotodynamic multi-phase flow booster |
| 12/12/2002 | US20020187037 Technique for producing a high gas-to-liquid ratio fluid |
| 12/04/2002 | EP1198673A4 Multi-phase flow pumping means and related methods |
| 12/03/2002 | US6488468 Pulp pump |
| 11/20/2002 | EP0972136B1 Centrifugal liquid pump with internal gas injection |
| 11/13/2002 | CN1094175C 具有内部气体喷射的离心液体泵 Having an internal gas jet centrifugal liquid pump |
| 11/05/2002 | US6474939 Cell for pumping a multiphase effluent and pump comprising at least one of the cells |
| 09/25/2002 | EP1242745A1 Method and system for optimizing the performance of a rotodynamic multi-phase flow booster |
| 09/11/2002 | EP1135611A4 Improvements relating to froth pumps |
| 09/06/2002 | WO2002046577B1 Method, computer program prodcut and use of a computer program for stabilizing a multiphase flow |
| 08/28/2002 | CN1366145A Self-sucking gas-liquid mixing pump and gas-liquid mixing method |
| 07/09/2002 | CA2047975C Device for multiphased pumping or compression and use thereof |
| 06/13/2002 | WO2002046577A1 Method, computer program prodcut and use of a computer program for stabilizing a multiphase flow |
| 05/07/2002 | US6382919 Two-phase impeller with curved channel in the meridian plane |
| 05/02/2002 | EP1200738A1 A pumping arrangement for pumping a liquid product from a tank or container |
| 04/25/2002 | DE10047829A1 Device for heat pump for sucking in gases has flow opening formed by cone near constriction in container; pipe for gas to be sucked in is in container and passes through cone |
| 04/24/2002 | EP1198673A1 Multi-phase flow pumping means and related methods |
| 04/23/2002 | CA2281826C Centrifugal liquid pump with internal gas injection |
| 04/09/2002 | US6368056 Stage in a submerged multiple-stage pump |
| 03/12/2002 | US6354318 System and method for handling multiphase flow |
| 01/09/2002 | EP0961852B1 Pump for fibrous pulp suspension with means for separating gas from the suspension |
| 01/02/2002 | CN1329698A Improvements relating to froth pumps |
| 11/06/2001 | US6312216 Multiphase turbo machine for improved phase mixing and associated method |
| 10/23/2001 | US6305911 Device and process intended for two-phase compression of a gas soluble in a solvent |
| 10/10/2001 | CN1317075A Rotation device |
| 10/02/2001 | US6296690 Compression-pumping system comprising an alternating compression section and its process |
| 09/26/2001 | EP1135611A1 Improvements relating to froth pumps |
| 08/21/2001 | US6276902 System comprising a single-phase compression unit associated with a multiphase compression unit |
| 08/15/2001 | CN1069740C Gas and liquid separator for pump set |
| 08/14/2001 | US6273674 Wet gas compression device comprising an integrated compression/separation stage |
| 08/14/2001 | US6273672 Two-phase helical mixed flow impeller with curved fairing |
| 08/09/2001 | US20010011556 System and method for handling multiphase flow |
| 08/08/2001 | EP1121534A1 Pulp pump |
| 07/31/2001 | US6267560 Wet gas compression method with evaporation of the liquid |
| 07/12/2001 | WO2001050024A1 Method and system for optimizing the performance of a rotodynamic multi-phase flow booster |
| 06/28/2001 | US20010005483 Device and process intended for two-phase compression of a gas soluble in a solvent |
| 06/05/2001 | US6242829 Submersible pumping system utilizing a motor protector having a metal bellows |
| 05/30/2001 | EP1102936A1 Rotation device |
| 04/19/2001 | WO2001011244A8 Pulse jet pumping apparatus |
| 04/03/2001 | US6210126 Device and process intended for two-phase compression of a gas soluble in a solvent |
| 02/15/2001 | WO2001011244A1 Pulse jet pumping apparatus |
| 01/25/2001 | WO2001006128A1 Multi-phase flow pumping means and related methods |